cache_packet
*packet_cache_get_packet (packet_cache *pcache, jack_nframes_t framecnt)
{
int i;
cache_packet *retval;
for (i = 0; i < pcache->size; i++)
{
if (pcache->packets[i].valid && (pcache->packets[i].framecnt == framecnt))
return &(pcache->packets[i]);
}
// The Packet is not in the packet cache.
// find a free packet.
retval = packet_cache_get_free_packet (pcache);
if (retval != NULL)
{
cache_packet_set_framecnt (retval, framecnt);
return retval;
}
// No Free Packet available
// Get The Oldest packet and reset it.
retval = packet_cache_get_oldest_packet (pcache);
//printf( "Dropping %d from Cache :S\n", retval->framecnt );
cache_packet_reset (retval);
cache_packet_set_framecnt (retval, framecnt);
return retval;
}
int
packet_cache_release_packet( packet_cache *pcache, jack_nframes_t framecnt )
{
int i;
cache_packet *cpack = NULL;
for (i = 0; i < pcache->size; i++) {
if (pcache->packets[i].valid && (pcache->packets[i].framecnt == framecnt)) {
cpack = &(pcache->packets[i]);
break;
}
}
if( cpack == NULL ) {
//printf( "retreive packet: %d....not found\n", framecnt );
return -1;
}
if( !cache_packet_is_complete( cpack ) ) {
return -1;
}
cache_packet_reset (cpack);
packet_cache_clear_old_packets( pcache, framecnt );
return 0;
}
void
packet_cache_clear_old_packets (packet_cache *pcache, jack_nframes_t framecnt )
{
int i;
for (i = 0; i < pcache->size; i++) {
if (pcache->packets[i].valid && (pcache->packets[i].framecnt < framecnt)) {
cache_packet_reset (&(pcache->packets[i]));
}
}
}